German KUEBLER coupling KUEBLER model KUEBLER price

KUEBLER coupling is a torsionally rigid coupling that has no rotational backlash even under load. Even when misalignment generates load, the rigid coupling still transmits torque rigidly. It is lightweight, with ultra-low inertia and high sensitivity. It is maintenance-free, with excellent oil resistance and corrosion resistance. Materials include aluminum alloy and stainless steel. Set screw type, clamping type, and split type are available. Product models with different bore sizes at both ends are also in stock.

KUEBLER coupling introduction

If there is any misalignment in the system, it will lead to premature damage of the shaft, bearings, or coupling. This means it cannot be used in high-speed environments because it cannot compensate for the relative displacement between shafts caused by high temperatures generated during high-speed operation. Of course, if the relative displacement can be successfully controlled, rigid couplings can perform excellently in servo system applications. In particular, small-sized rigid couplings have the advantages of light weight, ultra-low inertia, and high sensitivity. In practical applications, rigid couplings are maintenance-free and offer excellent oil resistance and corrosion resistance. Although people previously disagreed with using rigid couplings in servo drives, due to their high torque capacity, rigidity, and zero-backlash performance, small-sized aluminum alloy rigid couplings are increasingly being used in motion control fields.

KUEBLER coupling classification

Rigid couplings are divided into flange couplings, radial key flange couplings, sleeve couplings, clamp shell couplings, and parallel shaft couplings. Flange coupling: A coupling that connects two half-coupling flanges using bolts to achieve shaft connection. Radial key flange coupling: A coupling that connects two half-couplings using a radial key and standard bolts. Sleeve coupling: A coupling that connects two shafts using a common sleeve in a certain manner. Clamp shell coupling: A coupling that achieves shaft connection by clamping two axially split clamp shells in a certain manner. Parallel shaft coupling: A coupling that achieves connection of two parallel shafts using an intermediate disc and pin shafts.

KUEBLER coupling mechanical properties

The heating temperature for rigid couplings is usually 560~600℃, and the hardness requirement is HRC22~34. Since the purpose of quenching and tempering is to obtain comprehensive mechanical properties, the hardness range is relatively wide. However, if the drawing specifies hardness requirements, the tempering temperature must be adjusted according to the drawing requirements to ensure hardness. For example, some shaft parts require high strength, so the hardness requirement is high; while for some gears and shaft parts with keyways, the hardness requirement is lower because milling and broaching processes are performed after quenching and tempering. Regarding the tempering holding time, it depends on the hardness requirement and workpiece size. We believe that the hardness after tempering depends on the tempering temperature and has little relationship with the tempering time, but thorough tempering is required. Generally, the tempering holding time for workpieces is more than one hour. Cr can increase the hardenability of rigid couplings, improve the strength and tempering stability of steel, and provide excellent mechanical properties. For large cross-section or important quenched and tempered workpieces, Cr steel should be used. However, Cr steel exhibits second-type temper brittleness. From the perspective of international development trends, new-generation CNC machine tools are moving towards ultra-high speeds to improve production efficiency, using new functional components (such as electric spindles and linear motors) to achieve ultra-high-speed machining. The electric spindles and linear motors required for rigid couplings connect the motor directly to the main shaft via expansion locking bushings, eliminating intermediate components such as gearboxes to achieve ultra-high speeds. A single CNC machine tool requires at least five to six sets of couplings, and up to fifty to sixty sets. This indicates a very large market. The German rigid coupling industry is becoming increasingly popular. Coupled with factors such as corporate management, we will analyze what trends the coupling industry will present in the near future.

Weidou Intelligent Technology professionally sells German KUEBLER rigid couplings, KUEBLER flexible couplings, KUEBLER safety couplings, KUEBLER universal couplings, KUEBLER diaphragm couplings, KUEBLER jaw couplings, KUEBLER flange couplings, KUEBLER cross-slide couplings, KUEBLER slider couplings, KUEBLER gear couplings, KUEBLER tire couplings, KUEBLER elastic couplings, KUEBLER bellows couplings, KUEBLER roller chain couplings, KUEBLER spring couplings, KUEBLER original imports from Germany. Customers are welcome to inquire and order.